PWM buck regulator delivers 3A

Micrel's new PWM buck (step-down) regulator provides up to 3A of output current. It operates at 1MHz and has external compensation that allows a closed loop bandwidth of over 100KHz.

According to the company, the low on-resistance internal p-channel MOSFET of the MIC2208 allows efficiencies over 94 percent, reduces external component count and eliminates the need for an expensive current sense resistor.

The MIC2208 operates from 2.7V to 5.5V input and the output can be adjusted down to 1V. The devices can operate with a maximum duty cycle of 100 percent for use in low-dropout conditions.

The MIC2208 is available in the exposed pad 3-by-3mm MLF-12L package with a junction operating range from -40°C to 125°C.